Mold



l.Maixch 19, 1929.

. L. R. DAVIS MoLp Filed Jan. 110, 1927 2 Sheets-Shea?l S S. W RW n 10| A N N0 w. T w w Y w SY c -I ww Tmp y NN .S m. Y@ SNGmM.

5a @ua March 19, 19429. L. R. DAvls 1,705,9.05

' MOLD Filed Jan. 10, 1927 2 Sheets-Sheet 2 mf INVENTOR EWI-SHR. 0A vla* ATTvoRNE-Ys Patented Mar. 19, v19?5).

iJAT-iiiv'rv go-Friciifz.

Lnwisn. DAvis, or SAN FRANCISCO, CALIFORNIA. Y

Moni).

Application filedy January 10, 1927. Serial No. 1 60,260.

Vith the foregoing obj ect in view, together with such other objects and advantages as may subsequently appear, this invention resides in the construction andarrangement of parts hereinafter describedv and claimed, and. illustrated in the accompanying drawings, inl which- Figure 1 is a plan view of the mold Figure 2 is a section taken on 2-2 vof VFigurel; Figure 3 is a section taken on line 3-3 of i Figure 1 Figure 4 is a section taken on line 4- ,-4 of Figure 2; A

Figures 5 and 6 are respectively elevar tions and side views of part of one member of the mold;

Figures 7, 8 and 9 are respectively lfront elevation, side elevation, andgback elevation of another member ofthe mold; and Y i Figures 10 and 11 respectively are front and side elevations ofanother member of the mold.

Referring tothe drawings for av more detailed description thereof theinoldof my invention'comprises a plate 10 shown in -Figure 1, as being square, and having therethrough apertures 12. Encircling the apertures 12 on the upper face of the plate -10` are annular flanges 13. A sectional core as shown in'Figures 2 and 3 depends from theplate 10. rllhe core comprises a central 'section 15, which, as shown in Figures 2 and 3 is screwed into aperture 16 in the plate l0.

and 11.

rllhe section is also shown in Figures 10 Figure l() shows that central section 15 is provided with an aperture 17, through .which passes a pin 18 shown in Figures 1, 3, and 4. f

The central section 15 is also provided with vent hole 19 near its upper end and is provided at its lower end with a groove 20.

The sides of the central section 15 are provided with projections 22 shown in Figures 10 and 11. The sides of the central section 15 are contacted by members 25 which are alike and which are illustrated in Figures 7,

8 and 9.` The upper parts of the outer faces ofthe sections 25 are tapered as shown inf Figure-8, and are provided with flat :faces 2er, which are yat slight angles to each other;

the outer vfaces of the members 25in the lower parts thereof are arcuate, as shown in Figure 4. The inner sides of thesections 25 rare provided with grooves 28 in which are disposed projections 29, which are flushed with the inner faces of the members. The members 25 are provided rwithv vent holes 30. vThe construction of the outer circles yof central section 15 and the inner circles of sections 25 are'suchthat the projections 22 and 29'in contacting with each other, prevent the sections 25 fromk sliding out from the other parts of the mold. i prises members 32, which are alike and which Contact with the wider sides of the central section 15. The construction of the members 32 is shown in Figures 5 and 6. f

Themenibers 32 are arcuate on the lower portions of their outer surfaces, as indicated i by *their numeral 33 in Figures 5 and 6. The upper portions ofthe outer faces as indicated bythe' numeral '34 is tapered,

and is provided with flat faces 35, which are at small angles to each other. The lower portions 33 of the outer faces are provided with grooves 37, extending'froin. the bottom of the section 32 to af recess 38, which -eii-v circles and is concentric with an aperture 89. The tapered pin 18 passes'through the aperi ture 39 of both sections 32.

The upper portions of the core'sections The core also coin- I 32 are provided with vent holes 39a and 89". I

The hollowjcylindrical shell 40 encircles the core of the mold and depends from the lower part of the plate 10, to which'it is threadedly secured as shown in F igure-2.r The shell V40 in its upper portion has its interior surface tapered to litthe outer surfaces of the outer sections of the core. The lower portion of vthe shell 40 is provided with a series of spaced parallelr slots 41 lengthwise thereof.

It'will be seen from Figure 2 that the shell 40 is a hollow cylindrical. member 45, having therein a hole 46 into which the iiiolteii metal may be poured for filling the mold.

It will be noted that the cylindrical meniber comprises parts 45a and 451 which are each provided with registering apertures 47 through which fastening means may be inserted in order to hold the two parts together.

The bottoms of the parts 452L and 451J are laid over with semicircular plates 50 and 51 respectively. These plates are provided with semi-circular flanges 50a and 50h, and threadedly receive bolts and 53 respectively. When the parts and 4.5" are separated after the mold has been filled andthe metal cooled, the bolts 52 and 53 may be pushed inwardly and the plates and 5l loosened from the cast metal.

The pin 18 may be held in place by a wedge 54 as shown in Figures 3 and et. The plate l0 is provided with the holes 55 interiorly of thebosses 13.

HWhile I have described one embodiment of my invention, modification thereof may be readily devised without departing from the spirit of my invention, and itI is to be understood that such modifications come within the scope of the appended claims.

I claim:

l. A mold comprising a plate, a sectional core .extending downwardly therebelow, a cylindrical shell surroundingl said core and spaced therefrom through part of its length and a sectional cylindrical member surrounding said shell and spaced therefrom f-or part of its length.

2. Arnold comp lising a plate, a sectional core extending downwardly therebelow, a cylindrical shell surrounding said core and spaced therefrom through part of its length and a sectional cylindrical member surrounding said shell and spaced therefrom for part of its lenoth said )late eXtendinU over the cylindrical member and having apertures through which the cylindrical member may be reached. y

3. A mold comprising a plate, a sectional core extending downwardly therebelow, a cylindrical shell surrounding said core and spaced therefrom through part of its length, and sectional cylindrical member, surrounding said shell and spaced therefrom for part of its length, said core being grooved longitudinally in its upper end for venting purposes.

4L. A mold. comprising a plate, a sectional` core extending downwardly therebelow, a cylindrical shell surroundingvsaid core and iffoaeoe spaced therefrom through part of its length,

and a sectional cylindrical member, surroundthrough said core, said shell and said sectional cylindrical member and means associated with the pin for holding the sections of the cylindrical member.

A mold comprising a plate, a sectional core extending downwardly 'therebelow, a cylindrical shell surrounding said core and spaced therefrom through part of its length, and a. sectional'cylindrical member surrounding said shell and spaced therefrom forpart of its length, said core comprisingfa central section screwed into said plate.v

y6. A mold comprising a plate, a sectional core extending downwardly therebelow, a cylindrical shell surrounding said core and spaced therefrom through part of its length, and a sectional cylindrical member surrounding said shell and spaced therefrom for part of its length, said core extending below said shell.

7. A mold comprising a plate, a sectional core extending downwardly therebelow, a cylindrical shell surrounding said core and spaced therefrom through part of its length and a sectional cylindrical,member surrounding said shell and spaced therefrom for part of its length, and there beinga space between the free end of the core and said sectional cylindrical member.

8. A-mold comprising a plate, a sectional core extending downwardly therebelow, a cylindrical shell surrounding saidcore and spaced therefrom through part of its `length and a sectional cylindrical member surrounding said shell and spaced therefrom for part of its length, and means for holding together the sections of said core. 1

9. In a mold of the character described, a plate having a core suspended therefrom, a cylindrical member' surrounding the core and a shell interposed between the core and the V said member, and spaced from both of them.

vLEWIS R. DAVIS. 

